Am now on my third Arai, always had them. Like the fit, the venting and build. Actually never paid anywhere near full price. If you hunt around and don't mind last year's paint job then you can uaually pick them up at a good discount.
For example:
Arai Astro J Parkes Rep - 11400 A stunning Race Replica Helmet SALE PRICE RRP £399.99 Price: £230.00
http://www.motorcycle-clothing-store...e_Helmets.html Mate just bought one, very pleased.